Scientists, legal experts and campaigners attending the Rio+20 Earth Summit have expressed frustration and disappointment at the lack of progress on oceans protection. They were speaking at a debate organised by the International Programme for the State of the Ocean (IPSO) on the penultimate day of the summit.

Professor Alex Rogers, Scientific Director of the International Programme on the State of the Oceans (IPSO), reflects on a lack of progress on ocean protection in the twenty years since the original Earth Summit, and calls for greater action at Rio+20.